Pi4j Samples for Freenove Smart Car

This repository contains Java "SDK" for working with Freenove Smart Car for Raspberry Pi

⚠️ Due to inner workings of Pi4J library that enables controlling Raspberry Pi hardware peripherals, this project requires to be ran with elevated permissions as sudo

Project setup

Prerequisites

This project assumes you already followed Raspberry Pi OS setup from this guide. To install required dependencies, run the following command on your Raspberry Pi:

sudo apt-get install openjdk-17-jdk-headless maven libpigpio1 -y

Enabling remote development

Quarkus supports remote development mode, so that you can run Quarkus in a remote environment (such as on Raspberry Pi) and have changes made to your local files become immediately visible.

Raspberry Pi

To enable remote development, follow the next steps on your Raspberry Pi:

Check out this project on your Raspberry Pi:

git clone https://github.com/artemy/pi4j-freenove-smart-car-samples.git

From the project directory, build the project with maven:
```
./mvnw clean package
```
Run the project with QUARKUS_LAUNCH_DEVMODE and -Dquarkus.http.host=0.0.0.0 flag so that you can access the project remotely:
```
sudo QUARKUS_LAUNCH_DEVMODE=true java -jar target/quarkus-app/quarkus-run.jar -Dquarkus.http.host=0.0.0.0
```

Your local computer

Make sure you have the project cloned out locally

git clone https://github.com/artemy/pi4j-freenove-smart-car-samples.git

Set correct remote host in application.properties file:
```
quarkus.live-reload.url=http://raspberrypi.local:8080
```
URL should point to the correct host and port of your quarkus instance HTTP server.
To connect to remote instance of Quarkus app, run the following maven command from your local source code directory:
```
maven quarkus:remote-dev
```

If you followed the steps correctly, each time you access HTTP server of your remote quarkus instance, the code will be reloaded and any changes you made locally will be picked up on a remote Quarkus instance. For more details, see Remote Development Mode Quarkus documentation.

Dependencies

Quarkus
Pi4J